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Reform of Excitation System on the Domestic 600MW Subcritical Turbine Generator Unit
Abstract:
Analog Excitation regulation system is applied in No.3 turbine generator unit of Harbin No.3 power plant, Huadian Energy Group, and the system has several problems such as high failure rate, poor regulating performance and low level automation. As a solution, the static self-shunt excitation system is used to replace the analog excitation regulation system, UNITROL 5000 all-digital excitation system is adopted. With specific field situation, the paper introduces the structure and application of the system in details. Compared with the conventional A.C. exciting system, the all-digital excitation system has effectively improved the stability and reliability of the generator, with the advantages of more flexibility of the start-up modes and undisturbed switching. It is also reliable and convenient for the switching of PSS additional regulation unit.
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1837-1841
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Online since:
July 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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